CIF: Small: Network Beamforming: A Distributed Source Coding Perspective

CIF：小型：网络波束成形：分布式源编码视角

• 批准号: 1218771
• 负责人: Hamid Jafarkhani
• 金额: $ 44.44万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-10-01 至 2016-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1218771&HistoricalAwards=false
• 关键词: CIF; Small; Network; Beamforming; Distributed

Wireless networks have influenced our life tremendously through the promise of portability, mobility, and accessibility. Spectrum is the most valuable resource in a wireless network. As the number of users in a wireless network is increased, different users compete for the same portion of the available spectrum. The result of such a competition may be a lower quality of service, dropping of some users, higher prices and so on. One promising idea to resolve some of these challenges is to let the users cooperate in addition to compete with each other. The study of such a multi-user cooperative communications system is the main goal of this proposal. Most of the emphasis in cooperative communications has been on improving the performance of a single-user (point-to-point) communication. The insights from the single-user setting are not sufficient to address the challenges of multi-user communication networks. When shifting the paradigm from single-user to multi-user, the natural question that arises is the following - what are the benefits of cooperation in a multi-user network setting suffering from interference and how to achieve them? We start by defining new performance measures called generalized diversity orders. Then, we study different aspects of the above question including the maximum possible diversity orders in different multi-user cooperative communications network scenarios. We also propose to design practical systems that achieve these maximum diversity orders.

无线网络通过其便携性、移动性和可访问性的承诺极大地影响了我们的生活。频谱是无线网络中最有价值的资源。随着无线网络中用户数量的增加，不同的用户会争夺可用频谱的相同部分。这种竞争的结果可能是服务质量下降、部分用户流失、价格上涨等等。解决这些挑战的一个有前途的想法是让用户除了相互竞争之外还进行合作。研究这种多用户协作通信系统是本提案的主要目标。协作通信的大部分重点是提高单用户（点对点）通信的性能。单用户设置的见解不足以解决多用户通信网络的挑战。当将模式从单用户转变为多用户时，自然会出现以下问题：在遭受干扰的多用户网络环境中进行合作有哪些好处以及如何实现这些好处？我们首先定义称为广义多样性订单的新绩效衡量标准。然后，我们研究上述问题的不同方面，包括不同多用户协作通信网络场景中的最大可能分集阶数。我们还建议设计实现这些最大多样性阶的实用系统。